package org.csmzxy;

public class example03 {
    public static void main(String[] args){
        int i = 20;
        long l = i;
        float f =l;
        double d=f;
        System.out.println("long类型变量l:"+l);
        System.out.println("float类型变量f:"+f);
        System.out.println("double类型变量d:"+d);
    }
}